28078180324 has 24 divisors (see below), whose sum is σ = 50227107840. Its totient is φ = 13728111936.

The previous prime is 28078180321. The next prime is 28078180337. The reversal of 28078180324 is 42308187082.

It is not an unprimeable number, because it can be changed into a prime (28078180321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146109 + ... + 278395.

It is an arithmetic number, because the mean of its divisors is an integer number (2092796160).

Almost surely, 2^28078180324 is an apocalyptic number.

It is an amenable number.

28078180324 is a deficient number, since it is larger than the sum of its proper divisors (22148927516).

28078180324 is a wasteful number, since it uses less digits than its factorization.

28078180324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133467 (or 133465 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 43.

The spelling of 28078180324 in words is "twenty-eight billion, seventy-eight million, one hundred eighty thousand, three hundred twenty-four".